Elastic-fluid turbine.



L. G. LOLWLNSTBIN L L. H. DYLR.

ELASTIG FLUID TURBINE.

ABPLIGATION FILED sLPT.2s,1909.

Patented June 7, 1910.

s sums-.SHEET 1.

ttorneya.

L. G. LOEWBNsT-Bmuaz L. H. DYR.

l ELASTIG FLUID TURBINE.

APELIOATION FILED SEPT. 28,1909.

LU. LOBWENSTEIN 6r L. H. DYBR.

ELASTIC FLUID TURBINE.

APPLICATION IILIzD sEPT.2s.19o9.

Patented June 7,1910.

. 3 SHEETS-SHEET 3.

Inven or LOUIS C. Lonwnnsrnrn, or LYNN,

MASSACHUSETTS,

AND LEONARD H. DYER, OF

GREENWICH, CONNECTICUTVASSIGNORS TO GENERAL ELECTRIC COMPANY, A'

CQRPGRATIN OF NEW YORK.

ELASTIC-FLUID TRBINE.

senese.

Specification of Letters Patent. Application led September 28, 1909.

Patented June 7, 1910. Serial No. 520,003.

To all whom t may concern:

Be it known that we, Louis C. LonwnN- sTinN, a citizen ot the United States, a resident of the city of Lynn, county ot Essex, and State ot' Massachusetts, and LEONARD H. DYER, a citizen of the United States, an(l resident of the town et Greenwicl'i, county of Fairfield, State of Connecticut, have -inpented a new and useful Elastic-Fluid Turbine, otwhich the following is a specification.

The object we have in view is to increase the etliciency ol turbine plants employing multi-stage turbines, driving a plurality ot shafts, by rcheating the steam between stages of the two or more turbines, by means independentlyr ot the main steam generatoiniand by simple and etiicient apimratus.

"ll-hese and Jfurther objects will appear from the following specilication and the :uzcompanying drawings, considered together or separately.

In the drawings Figure 1 a plan View,

partly in section, ot a twin screw lay-out for marine use, showing the two turbines partly in section. Fig. is an end view of the same, partly in section. Fig. 3 is a sectional view through theline 3 3 of Fig. 1. Fig. 4 is a detailed view of a modilicat-ion et' the ,reheateix Fig. 5 is a diagrammatieal view ot the invention applied to single stage turbines. Fig. (3 is a ditierent embodiment of the same idea. Fig. '7 is a diagrammatical view of a marine lay-out showing the relation of theV turbines to the generator. Fig. 8 is a detail, also showing a modification.

In all the views like parts are designated by the same reference characters.

In carrying out our invention we provide a plurality ol elastic [luid turbines which may be steam turbines, although the invention is not limited to the fluid.

The invention is disclosed in the following specification and illustrated in the drawings as used in connection with a turbine of the horizontal type, but the invention is not so limited.

According to our invention a plurality of turbines are mounted on separate shafts. On each shaft may be a single turbine of a number of stages, 01 a number of turbines of one or more stages each, located in couse ot' steam as the.

I l l l the tenuiera'ture ot' cach section of the said operative arrangement with the turbines, and preferably between the two shafts, it two shat'ts only are used, is a single stage rcheater, or a plurality7 ot' reheaters in series arrangement. This reheater is divided into sections, each ot which is piped for connection with the stages ot ditterent pressures in the turbine. and is so arranged that the elastic tiuid from one stage will circulate through the proper section of the reheater b e/liorc entering the next turbine stage of lower pressure. The said reheater is provided with a furnace which is separate from i the furnace ot the main generator; Pref-l erably a liquid tucl furnace is provided, such furnace being-susceptible ot nice heat regulation, and also is capable of being divided intosetltious located under the sepaatc sections o't' the rcheater for governing reheater and its contents.

f1 the drawings, Fig. Y, 1 is a main generator, 2 the reheater.

In Fig. -.1 the t'u'bines are shown as indicated by 3 4. :lach turbine is provided with. the usual shaft 5, shell divided by diaphragms 7, into stages of ditl'crcnt pressures, ()n the sha Ets are wheels 8, containing rows of buckets of the usual form.

vIVe have shown the invention as applied to a turbine ot' the single wheel per stage type, but it is to be understood that any t'orm of turbine may be employed. The elastic fluid enters the stage of highest pressure through a nozzle t), and acts upon the buckets of the first stage. In the stage is a diaphragm 10, dividing the stage into two parts without pressure difference. A pipe 11 leads from the anterior side of the diaphragm 10 into the first section of the reheater 2. A second pipe 12 leads from the same section of the rcheater lo the posterior side of the diaphragm 10. rIhe reheater illustrated in Fig. 1 is shown as divided into sections, four in number, corresponding to the number of diaphragms 10. The reheater is shown as formed by the casing 13, the lire box 14 at the bottom and smoke box 15 at the top. The tubes 16 connect the two boxes. The casing 13 is divided into sections by partitions 17. The elastic fluid circulates outside the tubes 16 and the gases from the furnace of the reheater pass upward from the tire box through the tubes is well understood in connection with steamboilers.

Fig. 8 illustrates an arrangement in which the fluid circulates through the tubes, while the gases pass outside thereof.

The/furnace 19 can be of any type, that shown being for the purpose of burning liquid fuel, such fuel being admitted through the pipe 20. We prefer to so ar range the furnace that it-is in sections which correspond in number and location to the several sections of the reheater. To that end each section of furnace is provided with a pipe 20 and a controlling valve 21, as shown 'in Figs. 1 and 2. f It is possible by this arrangement to regulate the flame within eachfurnace, and consequently regulate the temperature of each .section of the reheater. In Fig. 8 is illustrated a thermodynamic device 24, located in coopera-tive relation with the fluid lcontents of the section of the reheater, and connected with the valve 21, so as to automatically control the admission ot' fuel to the furnace depending upon the telnperature of the tluid withinthe sections. It is our purpose to use one such device in each section of the reheater.

The two turbines are arranged in opposite sides of the reheater, and each discharges intoa section thereof, as shown in Figs. 1 and 2. For ordinary purposes each turbine is of the same size, and divided into the same number ofstages. The pressure in the given stage of each turbine in the pair is substantially the same, consequently the stages of the reheaters may be used in common with the same stages of the turbine. If

desired to have separate stages in the re-l heater for corresponding stages'in the turbine, it may be arranged, as shown in Fig.v '4,

In the event that one turbine is being run while the other is at rest, it may be desirable to cut olf the connection between the turbine and the reheater, and for this reason 'we elnploy Valves 22 arranged in the pipes 11 and 12.

In Fig.' 5 we show a view of an arrange-A ment in which one of the two shafts is shown as dr1ven by three separate turbines arranged 1n series. In connection with these turbinesare shown two reheaters alsoV invention to a marine plant in which a feed water heater 23 is employed in the main 65 generator 1. The advantage of using the reheater separate from the main generator is apparent, particularly in connection with a feed water heater. The temperature of the Huid between stages may be accurately controlled, by means of the separate furnaces, and this may be entirely independent "fof the action of the feed water heater 23.

Certain broad features herein disclosed are not claimed herein, but are claimed in our co-pending applications for patents tiled September 28th, 1909, and numbered 520,001 and 520,002.

In accordance with the provisions of the patent statutes, we have described the principle of our invention, together with the apparatus which we now consider to .represent the best embodiment thereof; but we desire to have it understood that the' apparatus is merely illustrative and that the invention can be carried out in other ways.

Having now described our invention, what we claim as new -and desire to secure by Letters Patent, is z- Y 1. The combination with a plurality of elastic lluid turbines, on separate shafts, of a reheater arral-lged between the turbines.

2. 'lhe combination with a main [luid generator and a plurality'ot' elastic tluid turf bincs, on separate shafts,of afl-cheater between the turbines and having a furnace independent of the main generator.

3. -The combination with a plurality of elast-ic lluid motors, arranged in stages of different pressures, of a common reheater, 10G Adivided into sections, and connected to corresponding stages, and a means for independent firing. I

4., The combination with a plurality of stages of equal pressures in separate motors, of a common reheater section, and a' means for independent firing.

5. The combination with a plurality of elastic fluid motors, of acommon reheater, fuel controlling means for the reheater, and lla automatic means for controllingadmission of fuel corresponding with. temperature ofv the steam. i

This specification signed and witnessed this 23rd day of Sept., 1909, and the30 day llo of August-1909 respectively.

LOUIS C. LOEIVENSTEIN.

, LEONARD H. DYER. Vitnesscs to signature of Louis C. Loewenstein:

' JOHN A. MoMANUs, J 1'.,- A

HENRY O.NVEs'rnru'lmnr; Witnesses to signature of Leonard II. Dyer: i

JOHN L. Lo'rsoH,-` v' ANNA L. TERRELL. 

